ABSTRACT

IEEE 802.16 standard known as WiMAX (Worldwide Interoperability for Microwave Access), is one of the most promising wireless access technology for next generation all-IP networks. The fundamental requirements for WiMAX to define itself as a possible winning technology are data reliability and the ability to deliver multimedia contents. WiMAX networks also face all the problems related to the hostile wireless environment, where power constraints make it difficult to provide hard QoS guarantees. This paper addresses the main issues of security and power efficiency, proposing a novel approach for data transmission. Direct transmission consumes more power. Multihop communication involves formation of groups, where group heads aggregate the data before transmitting it to the Base Station. It uses Chessboard clustering algorithm to perform clustering. If a group head is compromised, then the Base Station cannot ensure the correctness of the data sent to it. A group head is selected at random for forwarding the aggregate. Finally, this paper proposes a new and novel mechanism that the Base Station uses to ensure the correctness of the data sent to it.